Lubricating device for the shields of edge-trimming machines for shoes.



A. E. WEST. I LUBRIGAT'ING DEVICE EoE THE SHIELDS 0? EDGE TRIMMING MACHINES FOR SHOES.

I APPLICATION FILED D30. 14, 1906. RBNBWBD'MAB. 12. 1909. 1,092,465, Patented Apr. 7, 191 E 2 SHEETS-SHEET l.

a I} g /y f0 7 r 7 A. E. WEST. LUBRIGATING DEVICE FOR THE SHIELDS 0P EDGE TRIMMING MACHINES FOR SHOES.

APPLICATION FILED DEC. 14, 190B. RENEWED MAR. 12, 1909. 7 1,092,465. Patented Apr. 7, 1914.

2 SHEETS-SHEET 2,

STATES PATENT OFFICE.

ALONZO E. WEST, OF PORTSMOUTH, OHIO, ASSIGNOR 'IO UNITED SHOE MACHINERY COMPANY, OF PATEESON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

LUBRICA'IING DEVICE FOR THE SHIELDS 0F EDGE-TRIMMING MACHINES FOR SHOES.

Specification of Letters Patent.

Application filed December 14, 1906, Serial No. 347,877. Renewed March 12, 1909. Serial No. 483,025.

To altwhom it may concern:

citizen of the United States, residing at Portsmouth, in the county of Scioto and State of Ohio, have invented certain new and useful Improvements in Lubricating Devices for the Shields of Edge-Trimming Machines for Shoes, of which the following is a specification.

This invention relates to machines for shaving or trimming the edges of shoe-soles or heels and particularly relates to that class of machine in which the trimming is done by a rapidly revolving cutter. In a machine of this type there is provided, outside the cutter a guard plate or shield which rotates with the cutter and serves to keep the blades thereof from coming in contact with the upper of the shoe during the trimming operation. Ordinarily, the shield is a disk of metal, the edge of which travels in the rand crease, between the sole or heel and the upper. In order to produce a smoothly trimmed edge it is necessary to run the cutter at a high speed and the shield, which is liable to be pressed against the shoe, frequently leaves a mark or becomes heated to such an extent as to burn the leather.

WVith this in view, it is an object of my invention to provide a device adapted for attachment to any edge trimming machines whereby the shield is prevented from marking or burning the shoe upper.

It has been found that if the outer surface of the shield is kept lubricated the marking of the upper is avoided and the shield is prevented from becoming so heated as to burn the leather. The operator has heretofore ap plied oil to the shield either by holding a piece of waste against it or by dipping his hand in oil and holding it on the shield. This is an uncertain expedient since an operator is apt to forget to attend to the lubrication and at the speed at which the shield r0- tates it requires but an instant for heating.

My invention accordingly, relates to a device whereby the shield may be automatically and constantly lubricated.

Another object of my invention is to provide a device of the character indicated which shall insure the constant and uniform application of a thin film of oil over the outer surface of the shield by direct contact with said surface and not merely with the outer edge thereof. This is an important feature of my invention since if the oil is applied merely at the edge of the shield it fails to reach the central portions thereof, by reason of the centrifugal tendency imparted to it by the rapidly rotating shield.

The operator frequently has occasion to remove the cutter from its spindle either for resharpemng it or to substitute a differently shaped cutter, in changing from one style of shoe to another. To facilitate the removal of a cutter it is desirable'that the shield oillng device shall be movable from its opera tive position to a position in which it does not interfere with the removal of the shield and cutter.

Another object of the present invention, accordingly, is to provide a shield oiling device constructed and arranged to occupy normally a position for lubricating the shield but adapted to take a position out of contact with said shield when so desired by the operator.

A preferred embodiment of my invention consists of a bracket provided with attaching means by which it can be secured to an edge trimming machine, together with a pad carrying arm pivoted to said bracket, means for supplying a continuous supply of oil to said pad, and a device for yieldingly holding said pad against the shield of the edge trimming machine, or in an inoperative position, when so desired. These and other features of this invention, however, will be best understood and appreciated from the following description of one embodiment thereof selected for purposes of illustration and shown in the accompanying drawings in which Figure l is a side elevation thereof as applied to a machine of the character noted. Fig. 2 is a detached perspective view of the same as adapted for application to the upper or large sh0esole edge trimming-tool or cutter. Fig. 3 is a like View thereof as preferably adapted for use in connection with the lower or small tool or cutter, and Fig. 4 is a detached perspective view more especially of the oil vessels or cups, their delivery pipes, and their supporting brackets.

A bracket is provided for attaching the device to the frame of an edge trimming machine, said bracket consisting of a split or sectional collar 3 and an extension 5 projecting from one of the collar sections. The sections of said collar are suitably bolted together for clamping the same in place by screw bolts 4. A right-angled bar or arm 6 is pivoted to the extension 5 and is controlled by a spring? connected at one end directly to said arm and at the other end to an arm a projecting from said collar extension. The spring 7 holds the felt-pad 8, with which the arm 6 is equipped, in suitable yielding contact with the shield 9 of the edge-trimming toolor cutter 10. Said pad 8 is itself held against the outer end of the arm 6 by a. clamp-plate 11 having a right-angled eXten-- 'sion bar 12 lying fiat upon or parallel with said arm and held thereto by a T-shaped clamp or button 13 mounted on said arm.

Said clamp 13 has its shank or stem passing through an elongated slot 14 in the bar-extension 12, said slot allowing the passage therethrough, in the direction of its length,

of the head of said clamp for disposing the latter crosswise of said slot, as in assuming 1ts effective pos1t1on. Said bar 12 1s long1- tudinally movable or adjustable, as when it may be required to remove the felt-pad S for renewal or other purpose, by means of an ad ustmg screw 15 passlng through an unthreaded opening of an outstanding stud 16 and having screw-threaded connectlon with the right-angled inner end of said extensionbar 12.

Opening through the clamp-bar 12, so as to deliver upon the felt-pad 8, is an oil conducting pipe 17 carried by said clamp-bar and suitably connected by a rubber or other flexible pipe-section 18 with another pipe 19 leading from an oil cup 20 for delivering oil to said pad. The pad is utilized for application of oil to the cutter-shield 9 which it is found in practice, will prevent marring or defacing the upper. In its normal position said described parts, is also suitably attachedto the frame of the edge-trimming machine for use in connection with the shield of a second or small cutter thereof, as will be readily appreciated. The only feature of differentiation, however, of this latter from the former lies in providing a slotted bracket-plate 21 and a bolt 22 for the attachment of the same to the machine frame as above noted.

lVhile my invention is described and illustrated in connection with an edge-trimming machine it may be embodied advantageously in any machine for operating on boots and shoes having a movable shield which is liable to come in contact with the work-and such embodiment is, accordingly, within the scope of the present invention.

Having disclosed the nature of my invention and described an embodiment thereof, I claim as new and desire to secure by Letters Patent V l 1. A device for lubricating the shield of an edge trimming cutter, comprising an arm, a pad carried by said arm, means-supportingsaid arm fonmovement to carry said pad into operative position in contact with the shield or to move said pad into inopera' tive position, and means acting yieldingly to hold the pad in either of said positions.

2. A device for lubricating the shield of an edge trimming cuttercomprising a detachable bracket, an arm supported by said bracket for movement relatively thereto, a pad, means cooperating with said arm to support said pad in position toengage said shield, and a spring acting on said arm to hold said pad yieldingly in contact with the shield.

3. A device for lubricating the shield of an edge trimming cutter comprisinga detachable bracket, a pad carrying arm pivoted to said bracket for free movement thereon, a pad carried by said armand means additional to the pivot for normally holding said pad in contact with said shield, said means'being constructed and arranged to hold the pad carrying arm awayfrom the shield when desired.

41. A device of the character described,

comprising a pad for application to the shield of an edge-trimming cutter, and means whereby said pad is yieldingly held in contact with said shield, said means being constructed and arranged to hold the pad away from the shield when desired.

5. A device for lubricating'the shield of an edge-trimming cutter, comprising an arm, a pad carried by said arm, a support upon which said arm is pivotally mounted, a spring acting on said arm at one side of the pivot to hold said arm in operative position withthe pad pressed against theshield, and,

arranged to act on the other side of said pivot when the arm is turned into inoperative position to hold the arm in the latter position.

In testimony whereof .I affix my. signature, in presence of two witnesses.

ALONZO E. WEST. WVitnesses W. J. BURKE, lVILLIAM J. MEYER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

